The short answer
A fan that runs on after cooking is normal, not a fault. Real noise problems on these ovens are usually the convection fan touching its baffle, a dry cooling-fan bearing, or a loose panel resonating - and metallic ticking during preheat is ordinary expansion.
What you hear
- A fan still running after the oven is off — Normal cooling behaviour on these ovens.
- A scraping whirr that rises with temperature — The convection fan touching its baffle or the fan blade distorted.
- A steady whine that grows over months — A dry bearing on one of the fans.
- Metallic ticking during preheat and cool-down — Expansion of the liner; not a fault.
- Rattling from the door or the trim — A loose panel or a door that has worked slack.
- Not this fault: buzzing with a burning smell — Stop and read the electrical-safety page.
Ranked for these ovens
- Normal cooling-fan run-on mistaken for a fault — First, and the reason to establish the timing before anything else.
- Convection fan fouling its baffle — Second: a bent baffle or a dropped fastener puts the blade in contact.
- Cooling-fan bearing dry — Third, and the usual source of a whine that has grown slowly.
- Loose rear baffle or oven-floor plate — Fourth, and often the result of a heavy cleaning session.
- Bakeware or foil left on the oven floor — Fifth, and it rattles exactly like a failing part.
- Door hinge or trim rattling — Last, and easily confirmed by holding the door while the fault sounds.
Check it in this sequence
- Run the oven empty and note when the noise starts — Preheat, temperature or after switch-off: three different answers.
- Open the door and look for anything loose on the floor or the shelves — Free, and it accounts for a fair share of rattles.
- Hold the door and the trim gently while the noise sounds — A change means the panel, not the fan.
- Listen at the rear and at the control area separately — It separates the convection fan from the cooling fan.
Owner-side checks
- Remove everything from the cavity and run a short empty preheat — Loose bakeware is a common and embarrassing cause.
About 20 min
- Check that the rear baffle fasteners are present and snug — A baffle that has shifted puts the convection blade in contact.
Tools: screwdriverAbout 20 min
- Make sure the oven is level and standing solidly — A range rocking on an uneven floor rattles at temperature.
Tools: spirit levelAbout 15 min
- Time how long the cooling fan runs after switch-off — It converts a suspected fault into a known behaviour.
About 20 min
- Stop before removing the rear panel or the fan assembly — Those are live components and service work.
Before any panel is disturbed
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Let the oven cool completely before reaching into the cavity, and do not line the oven floor with foil: it blocks airflow, changes how the cavity heats, and can damage the enamel.
When to call
Call when a noise clearly comes from a fan, when a whine keeps climbing, or when a noise appears together with uneven cooking, because the convection fan then has two symptoms rather than one. Call at once if you smell hot insulation or see scorching near the control area: noise plus smell is an electrical question, not a mechanical one.
Other pages for this oven
Scope note
Written for the oven class under this badge and generalized across families and fuel types. Where a family-specific or model-specific page exists it is the narrower answer and is linked below. Not here: fan part numbers, baffle fastener positions, bearing specifications and the differences between wall ovens and range ovens.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
